weiqingy opened a new issue, #1038: URL: https://github.com/apache/flink-agents/issues/1038
### Search before asking - [X] I searched in the [issues](https://github.com/apache/flink-agents/issues) and found nothing similar. ### Description The Anthropic chat model defaults to `claude-sonnet-4-20250514` when the caller omits `model`. That model is deprecated, so a user who takes the default silently gets a deprecated model today and will hit a hard failure whenever it retires. The stale value lives in both language runtimes and is restated in several more places, so a user meets it regardless of which API they use: - Java, `AnthropicChatModelSetup.DEFAULT_MODEL` (`integrations/chat-models/anthropic/src/main/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelSetup.java:78`), plus the Javadoc parameter list (`:40`) and the Javadoc usage example (`:63`) - Python, `DEFAULT_ANTHROPIC_MODEL` (`python/flink_agents/integrations/chat_models/anthropic/anthropic_chat_model.py:453`), plus the docstring that repeats it (`:467`) - Docs, the `AnthropicChatModelSetup` parameter tables and code examples for both languages (`docs/content/docs/development/chat_models.md:290`, `:305`, `:342`, `:367`) Anthropic is also the only chat model integration whose default is a dated snapshot. Every other one uses an undated alias: `gpt-4o-mini`, `gpt-4o`, `gemini-3.1-pro-preview`, `qwen-plus`. The dated form is what let this default go stale unnoticed, since an alias tracks the current snapshot of its model version on its own. Two related problems sit next to it in the same files. The Python docstring repeats the literal value rather than naming the constant, unlike the OpenAI (`openai_chat_model.py:318`) and Tongyi (`tongyi_chat_model.py:232`) integrations, which is why it drifted alongside the constant. And the docs list of available models (`chat_models.md:385-388`) recommends four models of which three are no longer current, including `claude-3-7-sonnet-20250219`, which is retired, and `claude-opus-4-1-20250805`, which is past its retirement date. Proposed fix: move the default to `claude-sonnet-4-5` in both runtimes, update every restatement, make the Python docstring name its constant, and prune the docs model list. `claude-sonnet-4-5` is the same tier as the model it replaces, so callers who rely on the default see no change in cost or class of model, and it is already the name the connection tests use as their structured-output-capable example. This is the same defect, and the same fix, as #905 for the OpenAI integration. ### Are you willing to submit a PR? - [X] I'm willing to submit a PR! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
